Teat-cup for milking-machines.



M, LEHCH. TEAT CUP FOR MILKING MACHINES.

APPLICATION FILED OCT. l0, i916.

Patented Dem 4, 1917.

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salaires learns onirica,

MEREDITH LEIIICI-, QF POUGHKEEPSIE, NEW YORK, ASSIGNOR T THE DE LAVAL SEPARATOR COMPANY, A CORPORATION 0F NEW JERSEY.

{BEAT-CUP FOR MILKING-IVIACHINES.

Specification of Letters Patent.

Patented Dee. 4l, 1917.

Application filed October 10, 1916. Serial No. 124,751.

To cl3 lwho/a t may: concern:

lle il' known that I, Mnnnnrri-i LnrrCr-r, a citizen el' the United- States, residing` at Poughkeepsie, county of Dutchess, and )State of N ew York, havevinvented a new and useiul Improvementin 'feat-Cups for MilkingitIachines, of which the following is a full, clear, and exact description, reference beine,l had to the accompanying drawings, which forni a part of this specification.

My invention relates to that type of milkin@l machine teatcup which has a central chamber to receive the teat and an annular chamber to receive pnemnatic pressure l'or manipulation of the teat.

yllhe object of my invention is to provide a teat cup which is simple in construction and operation, easy to clean and at the same time durable in use.

l will now describe in detail a preferred term of teat cup embodying my invention, in connection with the accompanying drawings in whiel --v Figure l is a vertical section through the center the teat cup on the lines l-l of the other figures.

ig, is a cross sectional View on the line 3 fs a cross sectional view on the line l. fl cross sectional view on the line 5 is a cross sectional view on the line t Fig. l. l? i G is a side View of the complete teat The ri gid outer shell e is preferably made oli' metal, but may be mada` ot' hard rubber, Celluloid, or other suitable material. The outer shell is circular in cross section at all points, and is provided with a bead 7) around the top and bead or flange c around the bottom.

rThe liner or flexible partition l between the teat chamber e and the annular pulsation chamber f is made of rubber or other suitable material, and has formed integral with it a milk tube g communicating with the teat chamber e and the pulsation tube ,7L commeriicatinzgF with the pulsation chamber `Un the liner al is formed a flange z', near the junction of the two tubes g and la., adapted to be drawn against the flange f.' around the lower edge of the shell c. The upper end of the hner (las adapted to bc stretched out and turned back over the upper end of the shell and the flange o, where it is secured A separate l'lcxiblemouth by a snap ring provided at the upper end of the piece 7c is shell.

My teat cup may be used in connection with any-of several forms of claws, as, for example, that shown in my Patent No. 1,195,998 issued August 2f), 1916.

In operation four similar cups are ordinarily used. The` several milk tubes g are attached to the stumps or branches from the milk chamber of the claw and the several pulsation tubes L are attached to the stumps or branches from a chamber in communication with a source of pneumatic pulsations. The claw is not shown, as its specific construction forms no part of my invention.

My improved teat cup may be easily manufactured and assembled. The smooth cir.- cular shell is of a shape easily formed by drawing from sheet metal. lIt is also very easily cleaned. The rubber liner is, easily formed in a mold; It may be readilyv seen that, with the mouth piece c removed, all surfaces with which the milk comes in contact are accessible for washing and inspection without disassembling the cup. Because the pulsation tube is attached at the lowest point of the annular chamber it will draw otl, during the first few minutes of use, any water that may have :mcidentally reached that chamber during the washing of the cups.

Having now full y described my invention, what I desire to claim and protect by Letters Patent is:-

1. A flexible liner for milking machine teat cups comprising a teat receiving tube and separate milk' and pulsation tubes formed integrally with the teat receiving tube.

2. A flexible hollow liner tor milking machine teat cups provided with an integral extension having two tubes one ot' which, the milk tube, communicates with the interior of the liner proper and the other of which` the pulsation tube, opens outside that part ot' the wall .ot' the liner proper adjacent to the entrance to the milk tube.

3. A tout cup comprisingr a rigid outer shell, a flexible hner, and a milk tube and a pulsution tuhc both formed integrally with the liner.

Si. A teni cup comprising" n rigirl outer shell ol circuhu' cross section, n flexihlc liner, and a milk tuhe and :i pulsntion tulle hoth formed integrally with 'the liner.

5. A lent cup comprising :i rigid outer shell, u flexible liner` :unl :i milk Luhe and a pulsation ruhe both formed integral with the liner, Suid pulsntion tube opening; into the lower end of the annular space between the shell :nul 'the liner.

6. A tent cup comprising a rigid outer shell, u flexible liner within the shell and provided with an integr-nl 'extension huving two tubes, one of which connnuniciites with the interior of the line-r proper and the other of which communicates with the lower end;4

oit the annular .sp-dee between the sheil and the liner.

T. A vtent cup comprising u rigid outer shell, n icxible liner within the shell and i of the annular Space between the Shell and the liner und zi Hnge integral with said eX- teneion nml surrounding the Same below the f upper end of the second tube andyforming :in abutment receiving the lower end' of the outer shell. 4

In testimony of which invention, I have hereunto set my hand, nt Poughkeepsie, Y., on this 27th (inyof Sept., 1916.

MEREDITH LETTCH. 

